<template>
  <div class="sidebar">
    <el-menu
      class="sidebar-el-menu"
      :default-active="onRoutes"
      :collapse="collapse"
      background-color="#324157"
      text-color="#bfcbd9"
      active-text-color="#20a0ff"
      unique-opened
      router
    >
    <template v-for="(item,index) in this.routes">
      <template v-if="!item.hidden">
      <el-submenu :key="index" :index="index+''">
        <template slot="title">
          <i :class="item.iconCls" style="color: #20a0ff;width: 14px;"></i>
          <span slot="title">{{item.name}}</span>
        </template>
        <el-menu-item width="180px"
                      style="padding-left: 30px;padding-right:0px;margin-left: 0px;width: 170px;text-align: left"
                      v-for="child in item.children"
                      :index="child.path"
                      :key="child.path">{{child.name}}
        </el-menu-item>
      </el-submenu>
      </template>
    </template>




      <!-- <template v-for="item in items">
        <template v-if="item.subs">
          <el-submenu :index="item.index" :key="item.index">
            <template slot="title">
              <i :class="item.icon"></i>
              <span slot="title">{{ item.title }}</span>
            </template>
            <template v-for="subItem in item.subs">
              <el-submenu v-if="subItem.subs" :index="subItem.index" :key="subItem.index">
                <template slot="title">{{ subItem.title }}</template>
                <el-menu-item
                  v-for="(threeItem,i) in subItem.subs"
                  :key="i"
                  :index="threeItem.index"
                >{{ threeItem.title }}</el-menu-item>
              </el-submenu>
              <el-menu-item v-else :index="subItem.index" :key="subItem.index">{{ subItem.title }}</el-menu-item>
            </template>
          </el-submenu>
        </template>
        <template v-else>
          <el-menu-item :index="item.index" :key="item.index">
            <i :class="item.icon"></i>
            <span slot="title">{{ item.title }}</span>
          </el-menu-item>
        </template>
      </template> -->
    </el-menu>
  </div>
</template>

<script>
import bus from "./bus";
export default {
  data() {
    return {
      collapse: false
    };
  },
  computed: {
    routes(){
        return this.$store.state.routes
    },
    onRoutes() {
      return this.$route.path.replace("/", "");
    }
  },
  created() {
    // 通过 Event Bus 进行组件间通信，来折叠侧边栏
    bus.$on("collapse", msg => {
      this.collapse = msg;
    });
  }
};
</script>

<style scoped>
.sidebar {
  display: block;
  position: absolute;
  left: 0;
  top: 70px;
  bottom: 0;
  overflow-y: scroll;
}
.sidebar::-webkit-scrollbar {
  width: 0;
}
.sidebar-el-menu:not(.el-menu--collapse) {
  width: 250px;
}
.sidebar > ul {
  height: 100%;
}
</style>

